Today's #MinCup23 match is stibnite vs sodalite.
Stibnite is also known as kohl, used as an eyeliner since Ancient Egypt.
There in an Egyptian folktale where a dervish puts magic kohl on the eyes of a young man, rendering him invisible so he can sneak into the king's palace to see a princess.
A wily old woman catches the trespasser by burning buffalo dung - the rancid smoke makes the guy tear up, and the tears wash the magic kohl from his eyes. Oops.